July weather forecast
Harpers Ferry, IA

Weather in July

July, like June, in Harpers Ferry, Iowa, is a moderately hot summer month, with an average temperature varying between 79.9°F (26.6°C) and 61.9°F (16.6°C).

Temperature

The warmest month is July, with an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 61.9°F (16.6°C).

Humidity

In Harpers Ferry, the average relative humidity in July is 83%.

Rainfall

In Harpers Ferry, during July, the rain falls for 13.8 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Harpers Ferry, during the entire year, the rain falls for 124.7 days and collects up to 22.56" (573mm) of precipitation.

Snowfall

In Harpers Ferry, snow does not fall in June through September.

Daylight

In July, the average length of the day is 15h and 0min.
On the first day of July, sunrise is at 5:28 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:27 pm CDT.

Sunshine

In July, the average sunshine is 9.7h.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Harpers Ferry. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in July interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Harpers Ferry?

With an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 61.9°F (16.6°C), July is the warmest month in Harpers Ferry, Iowa.

What is the average humidity in July in Harpers Ferry?

The average relative humidity in July is 83%.

How many days does it rain in July in Harpers Ferry?

In Harpers Ferry, Iowa, in July, it is raining for 13.8 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Harpers Ferry?

In Harpers Ferry, Iowa, snow does not fall in June through September.

What is the average length of the day in July in Harpers Ferry?

The average day length in July in Harpers Ferry is 15h and 0min.

When is the sunrise / sunset in July in Harpers Ferry?

On the first day of July in Harpers Ferry, Iowa, sunrise is at 5:28 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:27 pm CDT.

How many hours of sunshine does Harpers Ferry have in July?

The average sunshine duration in July is 9.7h.

What is the month with the highest UV index in Harpers Ferry?

June and July, with an average maximum UV index of 6, are months with the highest UV index in Harpers Ferry, Iowa.

How high is the UV index in July in Harpers Ferry?

In Harpers Ferry, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in July
Harpers Ferry, IA

Average temperature in July - Harpers Ferry, IA
  • Average high temperature in July: 79.9°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in July: 61.9°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

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Average pressure in July
Harpers Ferry, IA

Average pressure in July - Harpers Ferry, IA
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in July
Harpers Ferry, IA

Average wind speed in July - Harpers Ferry, IA
  • Average wind speed in July: 6.6mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in July
Harpers Ferry, IA

Average humidity in July - Harpers Ferry, IA
  • Average humidity in July: 83%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in July
Harpers Ferry, IA

Average rainfall in July - Harpers Ferry, IA
  • Average rainfall in July: 2.48"

The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in July
Harpers Ferry, IA

Average rainfall days in July - Harpers Ferry, IA
  • Average rainfall days in July: 13.8 days

The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (3.6 days).

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Average snowfall in July
Harpers Ferry, IA

Average snowfall in July - Harpers Ferry, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (3.94").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Harpers Ferry, IA

Average snowfall days in July - Harpers Ferry, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Harpers Ferry, IA

Average daylight in July / Average sunshine in July - Harpers Ferry, IA
  • Average daylight in July: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 20min).
The month with the shortest days is December (Average daylight: 9h and 3min).

  • Average sunshine in July: 9.7h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.4h).

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Average sunshine days in July
Harpers Ferry, IA

Average sunshine days in July - Harpers Ferry, IA
  • Average sunshine days in July: 13.3 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9.6 days).

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Average UV index in July
Harpers Ferry, IA

Average UV index in July - Harpers Ferry, IA
  • Average UV index in July: 6

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in July
Harpers Ferry, IA

Average cloud cover in July - Harpers Ferry, IA
  • Average cloud cover in July: 36

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in July
Harpers Ferry, IA

Average visibility in July - Harpers Ferry, IA
  • Average visibility in July: 5mi

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

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